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4. For each additional elbow used after the first elbow, you must subtract 5 ft. from the maximum horizontal run
allowed. A maximum of 2 elbows are allowed.
For example: A vertical rise of 18” directly off the top of the fireplace with a 90
o
elbow would be allowed to run 6’ with 1/4” rise per ft.. If
an additional elbow is used within this vent run, the maximum horizontal run allowed would be 1’ with 1/4” rise per ft.. (6 ft - 5 ft. (for
additional elbow) = 1 ft.
)
TERMINATION VENT CAP LOCATION
:
This gas appliance must not be connected to a chimney flue serving another type of appliance.
GENERAL:
1.
Terminations against vinyl siding must use a vinyl siding protector. Follow instructions included.
2.
DO NOT RECESS TERMINATION KIT INTO OUTSIDE BUILDING MATERIALS - i.e.: brick, stone, etc.. If necessary,
extend framing so that termination kit will be exposed once building materials are installed.
3.
Vent termination must not be located where it will become plugged by snow or other material. The flow of combustion and
ventilation air must be not obstructed.
LOCATION CLEARANCES:
S
Above grade, veranda, porch, deck, balcony - 12". (A)
S
Operable window - 12". (B)
S
Permanently closed window - 12" (recommended to prevent condensation on window. (C)
S
Ventilated soffit - 24". (D)
S
Unventilated soffit - 12". (E)
S
Outside / inside corner - 12". (F)
S
Meter / Regulator: not to be installed above within 3 ft. horizontally from the center line of the regulator.
S
Service regulator vent outlet - 3 ft. radius.
S
Non-mechanical air supply inlet to building - 12".
S
Combustion air inlet to any other appliance - 12".
S
Mechanical air supply inlet - (G) US: 3 ft. above if within 10 ft. horizontally. NOTE: Massachusetts installations: 10 ft.
S
Above furnace exhaust or inlet - 12".
S
Above paved side-walk or paved driveway located on public property - 7 ft. * (H)
NOTE:
A vent cannot be located directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings.
S
Under veranda, porch, deck, or balcony (must be fully opened on a min. of 2 sides) - 12". (I)
S
Between two horizontal terminations - 12".
S
Between two vertical terminations - 12". (J) - Note: May be the same height.
* Clearance must be in accordance with local installation codes and the requirements of the gas supplier.
Figure 1
